Programabilni logički kontroleri
PLC – moduli za proširenja
Industrijski sistemi i protokoli predavanje 5
Sadržaj
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PLC
Proste PLC periferije – ponavljanje
Slozeniji PLC periferije, razni HMI
(primer text display)
Moderne IT tehnologije, modem,
Profibus, Ethernet , Internet
2/19
Moderni načini proširenja PLC
Standardni načini unosa i iznosa informacija
 Unos - Tasteri , prekidači, analogni signali
 Izlaz - sijalice, releji, kontaktori
Moderni načini proširenja
 Preko serijske veze, PPI i MPI ili preko
Profibus mreže (ne može S200)
 Preko kabla za proširenje
PLC
3/19
Primeri inteligentnih HMI koji se
preko serijskog kabla povezuju
sa PLC – OPERATORSKI PANELI
HMI – Operatorski paneli
 Dva osnovna dela i funkcije panela:
1. ispis - display
- samo tekstualni
- grafički - monohromatski
- u boji
2. unos - tasteri i tastatura
- sa predefinisanim značenjem
(minimalno konfigurisanje:
up, down, OK, ESC)
- slobodni za konfigurisanje
- numerički
- tastature
PLC
5/19
1. Tekst displej TD200 - operator panel
Primer povezivanja PLC preko serijskog kabla sa
inteligentnim HMI (proizvođač Siemens)
PLC
6/19
1. Tekst displej TD200 - operator panel
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Suitable for simple HMI applications in connection S7-200
LCD displey with
 two rows for 20 characters
 Four function keys (buttons) F1 to F4
 Four system keys (buttons) - (up, down for listing through
messages and parameters setting, OK – confirmation, ESC
–return)
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Connection to the PLC SIMATIC S7-200 or to the PC with
only one interface PPI (peer to peer interface) - RS 485.
Speed: 9,6/19.2/187,5 kbit/s.
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PLC
Vizard za konfigurisanje u MicroWin 4.1. Ne treba WinCCScada ili neki složeniji program kao SIMATIC Manager za S300
7/19
2. Touch panel TP070
Touch panel TP070 (Siemens)
PLC
8/19
2. Touch panel TP070

Suitable for simple or more complicated HMI applications in
connection with PLC SIMATIC S7-200

It is possible to display user grafics, dynamic bar graphs,
dynamic application variables, user buttons in four intensities of
gray graphics resolution 320x240 pixels
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One interface RS 485, maximal speed 19,2 kbit/s
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life cycle 6 years continuously
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For programming: TP Designer in collaboration with MicroWIN
V3.1 and higher.
PLC
9/19
3. Multipanel MP370
Proizvođač Siemens
PLC
10/19
Moduli za proširenje S200
Moduli za proširenja
PLC
12/19
1. EM 241 Modem module
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
PLC
The EM 241 provides an international telephone line interface
and supports sending numeric and text paging messages, as well
as SMS (Short Message Service) messages to cellular phones.
This is useful for remote diagnostics and maintenance, machine
control, alarm systems, and general communication functions.
In addition to CPU-to-CPU communication via a telephone line,
the EM 241 also supports Modbus RTU protocol, a protocol
that has been widely used for many years.
13/19
2. CP 243 - Ind. Ethernet module
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PLC
CP 243-1 and CP 243-1 IT communication processors are
used to connect an S7-200 PLC to an Industrial Ethernet
network.
14/19
2. CP 243 - Ind. Ethernet module
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Both modules, CP 243-1 and CP 243-1 IT, can be used to
connect an S7-200 PLC via Industrial Ethernet to a computer
running STEP 7 Micro/WIN.
This allows the S7-200 PLC to be configured, programmed, and
diagnosed remotely.
In addition, an S7-200 PLC connected to an Industrial Ethernet
network can communicate with S7-200, S7-300, and S7-400
PLCs and a variety of other devices.
CP 243-1 IT je jači, on može i na internet
 The IT functions of the CP 243-1 IT Internet module simplify
the process of setting up a control system that can email
diagnostic information or transfer files using Internet protocols.
PLC
15/19
3. EM 277 - PROFIBUS-DP module
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PLC
EM 277 PROFIBUS-DP module allows connection of the S7-200
CPU (CPU 222 and above) to a PROFIBUS-DP network as a
slave. PROFIBUS-DP is an open, international fieldbus standard
that allows a broad range of intelligent devices from various
manufacturers to communicate rapidly and efficiently.
16/19
4. EM 253 Position Module

Position control describes a range of applications that involve
movement with varying degrees of precision. The EM 253
Position module is a simple but powerful positioning
module that enables the user to control position systems from
microsteppers to intelligent servo drives (with integrated closedloop control).
Features of the module include:
• Provides high-speed control with a range from 20 to 200,000 pulse per second
• Supports both S curve or linear acceleration and deceleration
• Provides a configurable measuring system that allows you to enter data as
engineering units (such as inches or centimeters) or as a number of pulses
• Provides configurable backlash compensation
• Supports absolute, relative, and manual methods of position control
• Provides continuous operation
• Provides up to 25 motion profiles with up to 4 speed changes per profile
• Provides four different reference-point seek modes with a choice of the starting
seek direction and final approach direction for each sequence
• Provides removable field wiring connectors for easy installation and removal
PLC
17/19
5. EM 231 Thermocouple and RTD module
The EM 231 thermocouple module
Thermocouple is a junction between two
different metals that produces a voltage related
to a temperature difference
- EM 231 is for temperature acquisition using
standard thermocouples with a high precision.
- 4 inputs +/- 80 mV, 15-bit resolution+ sign,
-thermocouples type J,K, S, T, R, E, N
Type K (chromel -alumel)
alumel(95% nickel, 2% manganese, 2% aluminium 1% silicon )
chromel (90 percent nickel and 10 percent chromium)
PLC
EM 231 RTD module
-2 inputs for thermistors
-Više tipova RTD senzora
Platinum resistance thermometers
-Pt100/200/500/1000/10000
(Pt100 = 100 ohm na 0C)
Nickel resistance thermometers
- Ni100/120/1000, Cu10;
resistance 150/300/600 Ohms,
15-bit resolution + sign
Supports 31 standard rs. temp. sensors
18/19
5. EM 231 Thermocouple and RTD module
PLC
19/19